Vintage Gentleman’s Cruiser

[Bob Abell 2Participant @bobabell2]

Thanks Paul and Ashley

The Abell drives will be housed in the central cabin area and will be visible through the windows and rear doors

Hope to make it like a real engine room with tiled floor, oil pipes etc and lights

The generous chimney will vent the hot air!…….Might even fit a fan?…..and a bilge pump?…..and a chap welding!

And a few pin ups?

Capt Bob

[Bob Abell 2Participant @bobabell2]

Shop floor to Top Floor

All the batteries and junk will be housed in the fore deck compartment

The Abell drives will be in the central cabin at 160mm centres…..They don`t need long prop shafts because of the timing belt feature, so where do you suggest we position them?

This should also help you with your split hull design?

Bob

[Paul TParticipant @pault84577]

Shop floor from Executive Suite

This is a section through the 6ft version showing the hull split and motor positions.

Paul

[Bob Abell 2Participant @bobabell2]

Thanks Paul

Have you got a cross section at the motor position?

What motors are you using and props?

What motor is shown on your drawing?

Bob

[Paul TParticipant @pault84577]

The motors shown are 800s

I will be using a pair of 600s and I haven't decided upon the props yet.

Paul

[Bob Abell 2Participant @bobabell2]

Thanks Paul

Are you aware that the motors can be mounted in several different ways?

They could be four in a row, with feet horizontal

Or two pairs of Abell drives

Or two pairs mounted on vertical walls….etc

Are you having four motors?

Reading elsewhere, the MFA 850 motors are not the brightest knives in the box……….Are they good enough for us?

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob. Nothing wrong with 850 motors. There are of course better motors out there but that will be the case for anything. Very reasonably priced and quite powerful with lots of torque. The ABEL drive is shown with a 1;1 gearing. On 12v the 850 will be doing about 9000 rpm, and this should be more than enough for a large prop, 600`s would likely be going a bit faster than that?

You still need a glass cabin floor to see these babies. For lighting the motor room I would suggest that sticky-strip LED stuff, Easy to apply to the underside of the cabin floor and runs on 12v direct.

Paul. Wash your mouth out. I have NEVER used ducktape….

Ashley

 

 

 

Edited By ashley needham on 24/10/2014 08:52:47

[Bob Abell 2Participant @bobabell2]

If the MFA850 motors are good enough for Ashley Needham…..Then they are good enough for Capt Bob!

I think we'll be hearing from our inhouse expert,shortly……to the contrary!

A glass floor is very simple to install, Ashley….Or even a hinged floor, Paul style, is also possible…..Can't wait to work on that area

What is that roll of sticky tape and blobs, Ash?…..Some sort of light?

Will be going to Warwick shortly, on the club coach……I'll get some serious shopping done!

Capt Bob

[Paul TParticipant @pault84577]

Dear Kevin

After a light admonishment from one of our more senior and very respected members I have to own up to a little bit of teasing on my part.

For those of you who have been following this build you might have been wondering at my choice of a pair of 600s to push a 6ft boat. This is of course incorrect as a boat of this size will require something more in keeping with the power output of the Abell drives.

I had hoped that someone would take the bait and challenge my calamitous choice with hard data and offer a more suitable solution…………but this didn't happen.

In the fullness of time I expect to install a pair of hamster wheels connected by a 2:1 gear to the shafts, I expect to achieve a peak 45w of power from each hamster although I could vary their diet as I have been told that turnips provide an excellent food to exertion ratio.

There is a moral to this story.

Paul

[Paul TParticipant @pault84577]

The moral is

Don't use ducktape for a bikini wax

[Bob Abell 2Participant @bobabell2]

Hello Paul……Your medication is rather strong today?

I did spot your miserable motor choice, but assumed you has a good reason……..That`s why I asked if you were using four motors!

With the 800/850 option, you could have four in a row!……With a novel variable speed?

Bob

PS….Who`s Kevin?……….The Gerbil?

[Dave MilbournParticipant @davemilbourn48782]

2 x 24v heater-blower motors with 100mm 4-blade props, m'duck. Get some proper wellie up it. MFA? Phooey!

DM

[Paul TParticipant @pault84577]

Hello Bob

Kevin my name for our reader (readers) the ladies and gentlemen who read our scribble but never comment, I couldn't keep calling them Dear Reader so I gave them a name.

I tried Gerbils but they just don't have the staying power of Hamsters.

Paul

[ashley needhamParticipant @ashleyneedham69188]

Bob. I cant be bothered to read back so have forgotten how big the props are.

The 800/850 thing is quite simple.

800`s rev no load at 5000rpm, 850`s at 9000 ish rpm

oddly enough the 850 takes twice the current of an 800, ie about 10-11A as opposed to 5-6A.

Masses of torque from either motor. If it was a big prop it may be that the lower revs on a 1:1 ABEL drive would suit it best. A pair of 600`s would be ok (depending on the type) if geared down 4:1 or something. This is all personal preference of course.

The sticky tape is LED`s on a self adhesive track. It can be cut at 2" lengths (3 LED to the two inches) and runs at 12v…all 5metres of it or just a 2 inch bit. All you have to do is solder a couple of wires on. Brilliant stuff. They use it for under kitchen unit lighting.

I have a row on the carrier…the lighting is visible in anything other than full sunlight!! Comes in different colours as well. For installing "out of sight" as you would be it is a doddle.

Paul. Apology accepted (I think). Dont mention the D word again. The Mrs has a very nice young lady who comes round to do the waxing (and she does not use D-T) BUT we wont mention that !

Ashley (AJ….not a word)

Edited By ashley needham on 24/10/2014 18:25:35

Edited By ashley needham on 24/10/2014 18:28:04

[Bob Abell 2Participant @bobabell2]

Thanks Ashley

The props are 70mm dia

On another Model Boat website, mentioning no names, they reckon the MFA800/850 are well passed their sell by date and recco Graupner…….But are hard to find!

Warwick should have something suitable, no doubt

Those strip lights would look really nice along the lower cabin walls?

Bob

[Bob Abell 2Participant @bobabell2]

Some progess on the stern section today

It makes a nice change working on interesting detail areas

I like the doorway…..Drat!…..I`ve omitted the chimney!

Bob

[ashley needhamParticipant @ashleyneedham69188]

I have not seen anyone give any reason to rubbish the 800/850 motors. Just saying "they are past it" is …rubbish. Most of those Graupner motors have been around years in any event.

A 70mm prop would be happy at 5000 rpm especially if it had a good pitch on it.

A pair of 800`s would make short work of a 70mm prop.

Great rear deck area Bob, really nice. Great proportion. I would want to be there sitting on a buttoned leather settee sipping a nice cold beer and facing a stack of popodoms and chutney with a gorgus woman opposite whilst watching the sun go down over Molesey lock or somewhere equally exotic. This is of course AmyJ`s lifestyle downunder, only they always have nice weather.

You will need some lights behind that rear doorway Bob, make a feature of it. Great woodwork. A master at work.

Ashley

[Dave MilbournParticipant @davemilbourn48782]

Just to make my position clear, my suggestion about using 24v blower motors coupled with 100mm props was in connection with Paul's 6ft version of the model. The choice of motors for Bob's smaller version was made a long time ago and I have absolutely no comment to make on it.
In respect of the 800/850/900 debate, there is no point in recommending motors which are no longer available (Graupner Speed 900, MMB 900). The version sold by Jotika and Model Boat Bits is a much lower revving type. Despite their 11A rating I have seen MFA850 motors burn out so-called 25A ESCs, although that may say more about the speed controller than the motor. I also had back a P94 which had its case melted from the current drawn by these motors; P94 is rated for 2 x 20A motors continuously, and that's proper UK amps! That said, I've always been impressed by the performance of the 850 and the 800 motors when fitted into MFA's belt-drive unit. Paul might consider a pair of these with 850 motors on 12v and driving 100mm props for Lady Jane. I own and use several smaller MFA motors and rate them highly, especially the Noise Attenuated versions of the 385 and 540. The "phooey" was purely flippant!

Dave M

[Paul TParticipant @pault84577]

Bob

As usual your craftsmanship is impeccable and you are to be congratulated on the precision of your woodwork I honestly wish that I had your level skill.

My back is bad at the moment after picking up all of the toys that had been thrown out of the playpen but you know what it is like when youngsters have a row over a dummy.(disclaimer see below)

Meanwhile I have had a rethink about using hamsters and have decided to use the favourite Yorkshire choice of ferrets. I realise that there is an extra element of danger involved in using these animals but I think that the extra power is worth this risk.

Paul

Disclaimer….any analogy with current socio economic conditions are purely accidental and no comparisons should be made between any persons and my grandchildren.

[ashley needhamParticipant @ashleyneedham69188]

I am thinking that the issue with the 800/850 motors is their chunky size and thus the propensity for people to grossly overload them because they look as if they will manage a hefty prop. An X50 is as much as I would put on one directly.

DM has it again with the geared 850. This is a nice bit of kit, and one turns Trevor`s 100mm home-made wooden prop (yes, and it works just fine) no probs (although it does get a bit warm). A 70mm prop would be just about perfect and in point of fact a person whose name I have forgotten, a while ago made the boat from JAWS and used just this combination and it went really well.

Ferrets !! man, are you mad??? a Stoat surely.

Ashley

[IAN_IParticipant @ian_i]

Hi Bob..

The build is looking Fabulous….

Hope your back is better soon, Paul….lol

Best regards,

Ian

[Bob Abell 2Participant @bobabell2]

Thank you, Ian

Glad you are enjoying the build

Building this crazy big boat is very interesting and different from the usual size of model

It will be slightly embarrassing at the launch of the launch!

Bob

[Amy jane SeptemberParticipant @amyjaneseptember49770]

Posted by Paul T on 24/10/2014 13:46:56:

The moral is

Don't use ducktape for a bikini wax

Works fine

[Amy jane SeptemberParticipant @amyjaneseptember49770]

Boats looking real fine Cap'n Bob!

[Paul TParticipant @pault84577]

Hi Amy

The problem with duck tape is that we haven't seen it in the north of England since the missionaries stopped coming north of Watford.

The reason given was the lack of 'pie and mish' shops but it was really due to the demise of Watneys which had suffered terribly during the strikes at the Yorkshire gnat extraction farms.

Paul

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